PRODUCTION OF PORTABLE GEIGER COUNTER FOR THE EAST GERMAN ARMY

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80T00246A058100380001-5
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 5
• Document Creation Date: December 22, 2016
• Document Release Date: April 11, 2011
• Sequence Number: 1
• Publication Date: March 29, 1961
• Content Type: REPORT

Sanitized Copy Approved for Release 2011/04/11: CIA-RDP80T00246AO58100380001-5
INFORMATION REPORT INFORMATION REP
CENTRAL INTELLIGENCE AGENCY
This material contains information affecting the National Defense of the United States within the meaning of the Espionage Laws, Title
18, U.S.O. Secs. 793 and 794, the transmission or revelation of which in any manner to an unauthorized person is prohibited by law.
COUNTRY East Germany
SUBJECT Production of Portable Geiger Counter DATE DISTR. 20 MAR 196,
for the East German Army
NO. PAGES 2
REFERENCES RD
DATE 0
INFO.
PLACE
DATE A
THIS IS UNEVALUATED INFORMATION. SOURCE GRADINGS ARE DEFINITIVE. APPRAISAL OF CONTENT IS TENTATIVE.
personnel engaged in developing the device were sworn to special secrecy.-
are classified as "strictly confidential (streng vertraulich). The
designated "MSG 1,5 V was being developed by VEB Funkwerk Koepenick for
the Ministry of National Defense. All data concerning this development
In January 1961 a microray measuring device (Mikro-Strahlen-Messgeraet) 50X1-HUM
2. vit is planned to include this device in the standard equipment of every
soldier of the East German Army (NVA).
Therefore, a , . very high production output is foreseen Since the
device is to be worms on a belt, the NVA has specified=small dimensions,
simple operation, light weight, reliable functioning, sturdy mechanical
workmenship and simple construction.
3. The functioning of the device is based on the principle of the geiger
counter (Geiger-Mueller-Zaehler). The device measures the radiation energy
in the environs, responds to d rays ' rays and )- rays, and reacts with
high sensitivity to even slight radiation. Radiation is converted by the
device into audible beeps (akustische Klopfimpulse) which are heard by
means of ear plugs (Knopfhoerer). The interval between the acoustic beeps
indicates the strength of the radiation and when the beeps come so close
together so that a continuous tone is heard, the radiation count is dan-
gerous to humans.
1 Technical Details
a. - The dimensions of the device are 3 cm x 8 cm x 12 cm.
copy of the Phi),ips Tube type 18503, but with the outer dimensions
reduged.
b o The geiger tube (Geiger-Mueller-Zaehlrohr) used in the device is a 50X1-HUM
AIR x NSA
(Note: Washington distribution indicated by "X"; Field distribution by "#".)
Eyl
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 Sanitized Copy Approved for Release 2011/04/11: CIA-RDP80T00246AO58100380001-5
d. A small storage battery (Knopfakkum uL tor) is required which has
a 60 day capacity for uninterrupted current production without
recharging. Current consumption is correspondingly low.
By the use of a trailing contact switch (S 1)9 the contact switch
opens to the base of the transistor via a layer resister (R 1)
only after the switching on of the battery and closes before the
battery is switched off. The layer resister serves as a safety
resistance to the outflow of rrents from the low-
voltage electrolyte condenser
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 Sanitized Copy Approved for Release 2011/04/11: CIA-RDP80T00246AO58100380001-5
t(Keraaischer Kondensator
Kapasitat loooo pF
Spanneng 500 V
Tol Brans - 10 f
( Keraasiswher Koudensator
icapasitat 22o pF
8pannun4 Boo V
Tolerans - 10 ~,
Sohioht-Drehwiderstand
Kapassitat 1 KOhm
Spannung o925 ,
Tol eranz - 10
l S*Moht-Ti der stand)
Kapasitl[t 2,2 K.Oha
Sparmung o,05
Tolerans - 10
Sohiohtwiderstand
Kapasitit 2 MOhm
Spannung o,25 7:
Tolerans - 10 %
Stftklisto dos Strahlemmessgertltes AM 195 V
!tisIO Wmmmw ftmmww#~ft III~7/~1S4iwwwwm
(korrespondierend wit Stromlaufplan)
x~S~en'a~~ 1
C 1 and C 2
Kapasi tat )
3pannung
J L~ (Tol erens }
C 3 and C
04
A.1s UGC -ry
C 6 ,
5000 pY
Soo V
- to l'
Piedervolt-4.ektrolyt-Kondensator }
Kapasitlit 30 F
Spsnuung 6 V
Tolerans - 10 ~'-
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 Sanitized Copy Approved for Release 2011/04/11: CIA-RDP80T00246AO58100380001-5
R4
R5
R6
Rfi
>Z-
R 8 ,(
Trani storeen
Ti
T 2
{ iohter s ? 7~ i L e, ,
G 1 and G 2
~"!4 l64rwi~'32
Sohicht?Widerstsnd 50X1-HUM
Kapssi tft 10 Ohm
Spannung o,25 W
To1 erans - 10 %
Ysristor Typ 220o/6,6
(Import sus westlishem Ausland)
Sciiicht- idsrstand
itspasi t*t 1 KOhxa
Spannung 0905 ,
Tolsrans - 10 %
Sehioht-Widerstaud
Kapasitit 22 KOhm
W
pannung 0905
Tolerans - to
Sohieht- iderstand
Kapssitlt 470 Ohm
Spannuxi 0,05 t
Tolerans - 10
Sohalttransistor)
NF-'Trani stor
(Sel en-K1 einst-Gl eiohriohter )
inweg-Gloichriahtung). 300 V, 5 sA
1 ~~r v,. I T~' anstormator
Tr 1
sobiater
CIAT6-1 24"Z4 (polge-Kontakt-Sohalter)
G e iter-~' 11 rohr:
R3 1
9tH
ikro-Kuopfh5rer
Sanitized Copy Approved for Release 2011/04/11: CIA-RDP80T00246AO58100380001-5
 Sanitized Copy Approved for Release 2011/04/11: CIA-RDP80T00246AO58100380001-5
Mikro - Strahluags - McBgerat MSG - 1,5 V
!!!i!!it liii!!!!lii i!!!!ii!!ii!liiiiili!!!!
Al 1 N 4 i / L (- 1 C c r' C 61 U i/T & `e
R3 G2 R4
Sanitized Copy Approved for Release 2011/04/11: CIA-RDP80T00246AO58100380001-5